1 Department of Endocrinology, Hospital Universitario Ramón y Cajal, Madrid, Spain.
2 Department of Endocrinology, Hospital Universitario Puerta de Hierro Majadahonda, Instituto de Investigación Sanitaria Puerta de Hierro Segovia de Arana, Madrid, Spain.
3 Department of Endocrinology, Complejo Hospitalario de Navarra, Pamplona, Spain.
4 Department of Endocrinology, Complejo Hospitalario de Toledo, Toledo, Spain.
5 Department of Endocrinology, Complejo Asistencial Universitario de León, León, Spain.
6 Department of Endocrinology, Hospital Universitario La Paz, Madrid, Spain.
7 Department of Endocrinology, Hospital Universitario Central de Asturias, Oviedo, Spain.
8 Department of Endocrinology, Hospital Universitario de Basurto, Bilbao, Spain.
9 Department of Endocrinology, Hospital Universitario Gregorio Marañón, Madrid, Spain.
10 Department of Endocrinology, Complejo Hospitalario de Jaén, Jaén, Spain.
11 Present address: Department of Endocrinology, Hospital Universitario Virgen de las Nieves, Granada, Spain.
12 Department of Endocrinology, Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, Spain.
13 Department of Endocrinology, Clínica Universidad de Navarra, Pamplona, Spain.
14 Department of Endocrinology, Hospital Universitario Virgen del Rocío, Sevilla, Spain.
15 Department of Endocrinology, Hospital Universitario Vall d'Hebron, Barcelona, Spain.
16 Department of Endocrinology, Hospital Royo Villanova, Zaragoza, Spain.
17 Department of Endocrinology, Fundación Hospital de Alcorcón, Alcorcón, Madrid, Spain.
18 Department of Endocrinology, Hospital Universitari de Tarragona Joan XXIII, IISPV, Universitat Rovira i Virgili, Ciberdem, Tarragona, Spain.
19 Department of Endocrinology, Hospital de Jerez, Jerez de la Frontera, Cádiz, Spain.
20 Department of Endocrinology, Hospital Universitario Virgen de la Victoria, Málaga, Spain.
21 Department of Endocrinology, Hospital Regional Universitario de Málaga, Institute of Biomedical Research in Malaga (IBIMA), Malaga, Spain.
22 Department of Endocrinology, Hospital Moisès Broggi, Sant Joan Despí, Barcelona, Spain.